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Meeting 2017 TMS Annual Meeting & Exhibition
Symposium Energy Materials 2017: Materials for Nuclear Energy
Presentation Title Ductile Phase Toughening of 90-97W-NiFe Heavy Alloys
Author(s) Md Ershadul Alam, G. R. Odette
On-Site Speaker (Planned) Md Ershadul Alam
Abstract Scope Tungsten (W) is the leading candidate for the plasma-facing components for future fusion reactors. However, the inherent brittleness and high ductile-to-brittle transition temperature limits use of W as a structural material. One promising approach to improve W is ductile phase toughening. Here, the fracture toughness of commercial liquid phase sintered alloys with 90, 92.5, 95 and 97 wt.% W and a balance of 7:3 Ni:Fe solid solution ductile phase has been investigated. Pre-cracked 4-point bend resistance curve fracture tests were conducted at room temperature. Maximum load initiation toughness is scattered with the W fraction up to 95 wt.%, but drops somewhat 97%W alloy. However, the toughness of the 97 wt.% alloy is still at least ≈ 10 times higher than the monolithic W. Fracture occurs by stable crack growth and the steep resistance curve slopes average ≈200 MPa√m/mm. Toughening is due to extensive crack bridging and process zone deformation.
Proceedings Inclusion? Planned: Stand-alone book in which only your symposium’s papers would appear (indicate title in comments section below)

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

A Preliminary Investigation on the Phase Transformation Kinetics Behavior of an U-10wt%Mo Cast and Homogenized Alloy
Advanced ODS FeCrAl Alloys for Accident-tolerant Fuel Cladding
Bonding Characteristics and Site Occupancies of Si Atoms in M6C Carbides from First Principles and Experimental Study
C-17: Effect of Heat Treatments on the Microstructure and Mechanical Properties of Zr-1NB-1SN-0,1Fe Alloy used in the Nuclear Industry
C-18: Effects of Irradiation on Thermal Conductivity of Nickel Alloys
C-19: Reduced Deuterium Retention in Simultaneously Damaged and Annealed Tungsten
C-20: Studies of the Differential Thermal Analysis and Microstructural Characterization of Gd-containing Stainless Steel
Calculation of Phase Equilibria and Properties in Multi-Component Molten Salt Systems
Comparative Study of Thermal Conductivity of SiC and BeO from Ab Initio Calculations
Comparison of Corrosion Properties of Alloy 800 and Alloy 690 by In-situ Scratching Repassivation Behavior in High-temperature Pressurized Water
Compatibility Research of Fission Product Tellurium and Alloy N in Molten Salt Reactor
Development of a Novel Structural Material (SIMP steel) for Nuclear Equipment with Balanced Resistances to High Temperature, Radiation and LBE Corrosion
Ductile Phase Toughening of 90-97W-NiFe Heavy Alloys
EBSD and TEM Assessment of Deformation Localization in 718 Alloy
Effect of Steam Pressure on the Oxidation Behaviour of Alloy 625
Effects of Fe Concentration on Ion-irradiation Induced Defect Evolution and Hardening in Ni-Fe Binary Alloys
Enhancing the High-Cycle Fatigue Property of 316 Austenitic Stainless Steels through Introduction of Mechanical Twins by Cold-Drawing
Environmental Assisted Cracking of the Additively Manufactured Austenitic Stainless Steel in High Temperature Water
First Principles Investigations of Alternative Nuclear Fuels
First Principles Study of Electronic Structure and Thermo-mechanical Properties of the Components of Accident Tolerant Nuclear Fuel: UO2 and UB2
Friction Stir Processing of Degraded Austenitic Stainless Steel Nuclear Fuel Dry Cask Storage System Canisters
Fuel Cladding Materials for Supercritical Water Cooled Reactor
IASCC Behavior of Nickel-based Alloys in Light Water Reactors (LWRs)
Impact of Neutron Irradiation on Helium Desorption Behavior in Iron
In-situ Observation on the Oxides Stability under Laser and/or Electron Beams Irradiations in 9Cr-ODS Steel
Investigation of Oxidation/Carburisation Mechanisms of 9Cr Ferritic Steel Heat Exchanger Tubes
Irradiation Defects in UO2, CeO2 and (U, Ce)O2 Leached in Oxidizing Water: An In-situ Raman Study
Is There a Role for Advanced Materials in Light Water Reactors?
Microstructure Evolution of a Reactor Pressure Vessel Steel during High-temperature Tempering
Minimizing Hydrogen Diffusion through FeCrAl Alloy Accident Tolerant Fuel Cladding
Morphology of Y-Ti Nano-oxides in ODS Alloys Irradiated with High Energy Heavy Ions
Oxidation of Alloy 690 in Simulated Pressurized Water Reactor Primary Environment
Research and Development of Pressure Vessel Steels for Advanced Pressurized Water Reactors in China
Size Effects in Ion-irradiated 800H Steel at High Temperatures Utilizing Nanoindentation and Microcompression Testing
Systematic Studies on Dispersoid Stability and Swelling Resistance in ODS Alloys under Ion Irradiation Conditions
The Mechanical Response of Advanced Claddings during Proposed Reactivity Initiated Accident Conditions
Thermal Conductivity Reduction of Tungsten Plasma Facing Material Due to Helium Plasma and Cu2+ Ion Irradiation
Understanding Transuranic Binding Mechanisms and Speciation on Stainless Steel

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